<button  #dom (click)="onclick()" [disabled]='ui.disabled'>
    <span [hidden]="ui.loading != 'loading'" >{{ui.loadingText}}</span>
    <ng-content></ng-content>
    <ng-content select="title"></ng-content>
    <!-- <template *ngTemplateOutlet="text context:ui.context" ></template> -->
</button>